REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

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All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Wednesday, 27 March 2019

QLS 14TS1020 _ SERVICE MODE & ADJUSTMENTS

QLS 14TS1020 _ SERVICE MODE & ADJUSTMENTS



3P68S SERVICE MODES

  • Enter "factory service mode"：Press "MENU","Q.VIEW" and "PP" in turn.
  • Enter "design service mode" : After entering "factory service mode",select"SC"item,then press "8","9"keys.  (Normally "design service mode"is not needed for production line.)
  • Exit service mode: Press"DISPLAY"key to exit service mode.
ADJUSTMENT
  • In service mode, pressing digital keys directly can enter the corresponding page, pressing "MENU"key can enter the next page, pressing "SCAN"key can enter previous page.
  • Pressing "UP"and"DOWN"keys can select the items to adjust, pressing” LEFT" and"RIGHT"keys can adjust the values.
BUS OPEN MODE
  • In service mode, pressing"MUTE"key can enter "BUS OPEN"mode, which is useful for white balance adjustment using AUTO WHITE BALANCE EQUIPMENT or mass data written into EEPROM. IC.
  • Pressing"MUTE"key again can exit "BUS OPEN" mode.
Vg2 ADJUSTMENT MODE
Two methods to adjust VG2 voltage:

OSD mode:
  • This mode is for sets with AKB function(page10 "VG2-MODE"is set to 1 and hardwire is with CCC loop ), adjust the VG2 pot meter on the FBT till "OK" is displayed.

Horizontal line mode:
  • This mode is for sets without AKB function(page 10"VG2-MODE" is set to 0 and hardwire is without CCC loop), adjust the VG2 pot meter on the FBT until the faint horizontal line appears in dark room(usually only one color: Red ,green or blue.
FACTORY MODE
  • In service mode, pressing"PP"key can erter "FACTORY MODE", which is useful for aging in production lines.
  • Pressing "PP"key again can exit "FACTORY MODE".
SCREEN VOLTAGE ADJUSTMENT
  • The TV set will be set up in the "AV" "STANDARD" mode, no signal input.
  • Enter into adjust factory mode, and press "03" keys to choose "Vg2" item, it will be permitted to enter light Line mode.
  • In light-Line mode, Rotating screens potential for grid-line level so you can adjust. Press "CH+."or "CH-." key the by-line can be returned to the state in full screen mode, and then exit it.
AGING MODE
  • When enter into factory mode state, pressing P.P. key will be permitted to enter Aging of machine mode.
  • Press "8"key and "9"key one by one button exit aging mode.
Posted By: FRANK at 01:51
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